Today's Message Index:
----------------------
1. 10:29 AM - latest edition? (Ken Ryan)
2. 11:53 AM - Re: latest edition? (Robert L. Nuckolls, III)
3. 01:09 PM - alternator knocked off line when strobes turned on (Steve Sundquist)
4. 05:11 PM - Re: alternator knocked off line when strobes turned on (Robert L. Nuckolls, III)
5. 08:56 PM - Re: alternator knocked off line when strobes turned on (Steve Sundquist)
Message 1
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I have the AeroElectric Connection Revision 12A. Is it current?
Message 2
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| Subject: | Re: latest edition? |
At 12:27 2014-09-16, you wrote:
>I have the AeroElectric Connection Revision 12A. Is it current?
Yessir . . . it is.
Bob . . .
Message 3
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| Subject: | alternator knocked off line when strobes turned on |
Good day,
When my strobes are turned on, after two or three seconds the alternator
goes off line. I can turn the strobe switch off, recycle the master
switch and the alternator comes back on line. With the strobes off, I
can load the electrical system clear up to fifty amps with the landing
light, nav. lights, pitot heat, etc. and the alternator won't go off
line. When the alternator goes off line with the strobes on, the
strobes continue to operate off the battery. This behavior just started.
The aircraft is an older Super Cub. The only instrumentation in the
electrical system is an ammeter on the alternator output. I cannot find
a breaker in the field circuit. The alternator is an InterAv (Motorola)
and the voltage regulator appears to be a Motorola. The strobes are
Whelan.
Any thoughts are appreciated. Thank you,
Steve S.
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Message 4
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| Subject: | Re: alternator knocked off line when strobes turned |
on
At 15:08 2014-09-16, you wrote:
>
>Good day,
>
>When my strobes are turned on, after two or three seconds the
>alternator goes off line. I can turn the strobe switch off, recycle
>the master switch and the alternator comes back on line. With the
>strobes off, I can load the electrical system clear up to fifty amps
>with the landing light, nav. lights, pitot heat, etc. and the
>alternator won't go off line. When the alternator goes off line
>with the strobes on, the strobes continue to operate off the
>battery. This behavior just started.
>
>The aircraft is an older Super Cub. The only instrumentation in the
>electrical system is an ammeter on the alternator output. I cannot
>find a breaker in the field circuit. The alternator is an InterAv
>(Motorola) and the voltage regulator appears to be a Motorola. The
>strobes are Whelan.
Is this a new condition? Try loading the system with
lights and heat and turning all off simultaneously
to see if the trip repeats.
What form and function of OV protection is included
in your system? Sounds like the ov trip has become
'twitchy' . . . do you have an accurate voltmeter
in the system? What is the normal bus voltage.
Bob . . .
Message 5
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| Subject: | Re: alternator knocked off line when strobes turned |
on
Thank you for your response.
This is a new condition. The OV protection relay is part of the InterAv system,
part no. 635-62448. There is no voltmeter in the system so I don't know what
the normal buss voltage is. The only instrumentation in the system is the ammeter
on the alternator output. I will load up the system and turn it all off
at once after I reinstall the alternator. I removed it for testing at a local
shop.
Sent from my iPad
> On Sep 16, 2014, at 5:09 PM, "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
wrote:
>
>
> At 15:08 2014-09-16, you wrote:
>>
>> Good day,
>>
>> When my strobes are turned on, after two or three seconds the alternator goes
off line. I can turn the strobe switch off, recycle the master switch and the
alternator comes back on line. With the strobes off, I can load the electrical
system clear up to fifty amps with the landing light, nav. lights, pitot
heat, etc. and the alternator won't go off line. When the alternator goes off
line with the strobes on, the strobes continue to operate off the battery. This
behavior just started.
>>
>> The aircraft is an older Super Cub. The only instrumentation in the electrical
system is an ammeter on the alternator output. I cannot find a breaker in
the field circuit. The alternator is an InterAv (Motorola) and the voltage regulator
appears to be a Motorola. The strobes are Whelan.
>
> Is this a new condition? Try loading the system with
> lights and heat and turning all off simultaneously
> to see if the trip repeats.
>
> What form and function of OV protection is included
> in your system? Sounds like the ov trip has become
> 'twitchy' . . . do you have an accurate voltmeter
> in the system? What is the normal bus voltage.
>
>
>
>
> Bob . . .
>
>
>
>
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